/*
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You under the Apache License, Version 2.0
 *  (the "License"); you may not use this file except in compliance with
 *  the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

package fr.loof.fonzie.keywords;

import java.util.Collection;

import org.springframework.util.Assert;

import fr.loof.fonzie.parsers.Constraint;
import fr.loof.fonzie.parsers.JPQLPersistenceQuery;
import fr.loof.fonzie.parsers.Property;
import fr.loof.fonzie.parsers.QueryPostProcessor;

public class In
    extends AbstractConstraint
    implements Constraint, QueryPostProcessor
{
    protected String getOperator()
    {
        return "in";
    }

    @Override
    protected String getParameterExpression(JPQLPersistenceQuery query)
    {
        return "(" + super.getParameterExpression(query) + ")";
    }

    @Override
    @SuppressWarnings( "unchecked" )
    protected void doCheckType( Class arg, Property target )
    {
        if ( arg.isArray() )
        {
            arg = arg.getComponentType();
            Assert.isAssignable( target.getType(), arg, "argument of type " + arg
                + "[] is not compatible with property " + target.toString() );
            return;
        }
        if ( arg.isAssignableFrom( Collection.class ) )
        {
            // No way to check collection type :'(
            return;
        }
        throw new IllegalArgumentException();
    }

}